silx.gui.plot.PlotWidget: Fixed matplotlib backend wheel support - #4686
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t20100
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Aug 1, 2026
| event.modifiers(), | ||
| event.phase(), | ||
| event.inverted(), | ||
| qt.Qt.MouseEventSynthesizedByApplication, |
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PyQt5 has no pointingDevice argument: https://doc.qt.io/archives/qt-5.15/qwheelevent.html#QWheelEvent-6
| event.modifiers(), | ||
| event.phase(), | ||
| event.inverted(), | ||
| qt.Qt.MouseEventSynthesizedByApplication, |
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event.source() is obsolete in Qt6: https://doc.qt.io/qt-6/qmouseevent-obsolete.html#source, and so not available through PyQt6.
Though it works with PyQt5 and PySide6, I decided to do the same for all bindings (TBH I doubt it is ever retrieved).
| event.buttons(), | ||
| event.modifiers(), | ||
| event.phase(), | ||
| event.isInverted(), |
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Typo here, there is no isInverted, it's inverted https://doc.qt.io/qt-6/qwheelevent.html#inverted-prop
payno
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Aug 3, 2026
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<Module or Topic>: <Action> <Summary>(see contributing guidelines)PR summary
This PR fixes issues with the use of
QWheelEventevent in the matplotlib backend with the different Qt bindings (see comments).To reproduce:
QT_API=PyQt6 ipython->from silx import sx, config; w = sx.plot([1, 2, 3], backend="mpl")and zoom in/out with the trackpad (or need to fall in the specific condition
if event.angleDelta().y() == 0:)Bug introduced in #4631
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